The Gram opal occurrence is located on a tributary of Ingram Creek, approximately 9.3 kilometres southeast of Westwold. The claim was staked, in 1995, as a result of prospecting work conducted by R. W. Yorke-Hardy, who noted numerous occurrences of agate, white to brown opaque common opal and honey- to amber- coloured jelly opal in fractures and vesicles within various volcanic rock units.

The claims are underlain by an extensive basal sequence of crudely bedded clast- and matrix- supported lahars and ash to lapilli tuff units of the Eocene Kamloops Group. Locally, a northeast- trending belt of clast- supported basaltic- andesitic lahars of the Tranquille Formation occur.

White to grey agate, white common, opaque grey- black, opaque red caramel to brown and translucent clear to light blue jelly opal occur in a grey to bleached brown aphanitic to amygdaloidal basalt over an area of 600 by 150 metres (Assessment Report 24838).